yuille



(No Model.) I w I 1 J. KERNAN & R. B. YUILLE.

VALVE GEAR FOR REGENERATIVB FURNACES.

No. 535,151. Patented Mar. 19, 1595.

M m Q 1 1 v 1 I Eh a 3 U I if 1 K) x Q I WITNESSES; A A (21:32:;

Q Mm W ATTORNEYZ mus PETER5 so, normumou WASNINGTON I5 the chimney flue.

' UNITED STATES PATENT OFFICE.

JOHN KERNAN AND ROBERT B. YUILLE, OF PITTSBURG, PENNSYLVANIA, ASSIGNORS OF ONE-THIRD TO CHARLES W. SARRIOKS, OF SAME PLACE.

VALVE-G EAR F R. 'RVEGIEN ERATl'V E 'FU RN'ACES.

SPECIFICATION forming part of Letters Patent No. 536,151, dated March 19, 1 895. Application filed January 18, 1895. Serial No. 535,408. (No model.) F

To all whom it may concerm.

Be it known thatwe, JOHN KERNAN and ROBERT E. YUILLE, both of Pittsburg, in the county of Allegheny and'State of Pennsylvania, have invented a newand Improved Valve- Gear for Regenerative Furnaces, of which the following is a full, clear, andexact description.

The invention relates to valve mechanism for regenerative furnaces, and its object is to [0 provide a new and improved valve gear, which is simple and durable in construction, very eifective in operation, easily reversed, and arranged to connect and disconnect the gas supply and the, furnace and the latter and The invention consists principally of a valve chamber provided with diagonal valve seats crossing each other at or near their middle, and valves fitted to slide on the said 2c seats. v

The invention also consists in certain parts and details, and combinations of the same, as will be hereinafter fully described and then pointed out in the claims.

Reference is to be had to the accompanying v drawings, forming a part of this specification,

in'which similar letters of reference indicate corresponding parts in both views.

Figure l is a'sectional side elevation of the 0 improvement; and Fig. 2 is a transverse section of the sameon the'line22' of Fig. 1.

The improved valve gear for a regenerative furnace of any approved construction is pro-- vided with avalve casing A, formed on oppo- 3 5 site sides with openings A and A connected with the gas fines B and B' ot' the furnace. The top of the valve casing A is provided with a valve seat A, adapted to be engaged by a valve 0, to connect the interior of the valve I 40 casing with the gas supply flue D and discon-- nect it therefrom; The open bottom A of v the casing A leads into the chimney fine.

On the sides of the casing A, at the inside thereof, are arranged the diagonal valve seats 5 F and F, crossing each other at or near their middle, as illustratedin Fig. 1. On the valve seats F and F are fitted to slide alternately the slide valves G and G' respectively, adapted to rest at their outer ends on supports H and H respectively, secured on the furnace.

The outer ends of the slide valves G and G are pivotally connected by links I and I respectively with levers J and J respectively, fulcrumed-at J on an overhead beam K, as plainlyindicated in Fig. 1. Thelevers Jand J are connected with each other by a linkL formed with an extension L pivotally connected with-a hand lever N, fulcrumed on a hanger K supported on the beam.

Now it will be seen that when the several parts are in the 'positionillustrated in Fig. 1,

'then the valve G is in an innermost or closed position while the valve, G is withdrawn and the interior upper portion of the valve cas ing A is connected by the opening A with the gas flue B leading to the furnace, so that when the valve O is lifted, gas from the flue D can pass through the upper portion of the valve casing A, and through the opening A to the gas flue B. I At the same time products of combustion from the furnace can pass through the flue B and opening A into the lower portion of the valve casing A, to pass through the bottom A to the chimney flue E.

Now when it is desired to reverse the position of the valves to reverse the operation of the furnace, then the operator moves the lever. N in the direction of the arrow a, see Fig. 1, so that the levers J and J are caused to swing, and the valveG is moved outward, while at the same time the valve G is moved inward into a closed position. By this movement of thevalves the upper portion of the valve casing A is connected by the opening A with the flue B, while the other flue B is connected with the lower portion of the valve casing and with the chimney flue E. When it is desired to again reverse theworking of the furnace, then the lever N is moved back to the position shown in Fig. 1, so that the valves G and G are again actuated simultaneously, so-that the valve G is moved into an outermost position and the other valve G, into an innermost position.v Thus by the simple moveinentof the lever N, a reversing 5 of the valves and consequently of the furnace takes place. 4

In one side of the valve casingA and at the middle thereof, is formed an opening adapted to be closed by a plug 0, against the I03 outer end of which rests a weighted lever P, to hold the said plug in position. This plug 0 serves to prevent gas from escaping the chimney line.

It will be seen that by the arrangement described one of the valves Gor G is in an outermost position and consequently can readily cool while the other valve is in operation.

It will further be seen that the valves can be readily repaired while in an outermost position without stopping or interfering with the working of the furnace.

If desired, the valve casing may be waterjacketed or lined with fire brick or other suitable material on the inside.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. A valve gear for regenerative furnaces, comprising a valve chamber provided with diagonal valve seats crossing each other at or near their middle, and slide valves fitted to slide on the said seats, substantially as shown and described.

2. A valve gear for regenerative furnaces, comprising a valve chamber provided with diagonal valve seats crossing each other at or near their middle, slide valves fitted to slide on the said seats, and means, substantially as described,for impartingasimnltaneons movement to the said valves so that one moves inward and the other moves outward, as set forth.

3. A valve for regenerative furnaces, comprising a valve casing formed with an open top and bottom and side openings, diagonal valve seats formed in the said casing, and slide valves fitted to slide on the said seats and arranged in such a manner that when one moves inward the other moves outward, as set forth. l

4. A valve for regenerative furnaces, comprising a valve casing formed with an open top and bottom and side openings, diagonal valve seats formed in the said casing, slide valves fitted to slide on the said seats and arranged in such a manner that when one moves inward the other moves outward, a plug held in one side of the said casing, and a weighted lever for holding the said plug in position, substantially as shown and described. JOHN KERNAN.

' ROBERT D. YUILLE.

Witnesess:

OWEN KELIHER, CHARLES W. SARRICKS. 

